I bet money that the moment people start using these to throw off video surveillance by easily changing their facial features they will be forbidden.
Also: if you can unlock a phone with this mask, that phone is very easy to unlock, steal, hack…
It’s a typical case where someone thinks about a problem THEY might have but it isn’t a good idea for many reasons (90% of startups are this, 9% are “Uber, but for [random thing]” and 1% are about solving problems in a scalable way)